Improvement in shutter-workers



einem HERMANN" Wo'Lrr,` e or MILWAUKEE, Wisconsin.'

IMPRovEMENT IN srmrrfm-W*0R KPRS.A

i lfhe Schedule referred to` in these Letters-Patent and making part f thesame. v I

, I, HERMANN WOLFF, of Milwaukee, inthe county y State` of Wisconsin, have in` vented'certain' Improvements` in Blind-Wvorkers, of

which the following 'is a specification.

The nature and object of the invention' .is to open' alud close the blinds from theinside by turning :L knob.

Descrijtfion of lhcfDwl-gvinjj) form/ing' parto] this Specification. FignrelV side views l Figure :i view of `the rworker, with the` cover re- Figure III, n sectional View',

General Description..

A is the lentof the worker, towhichare attached the-works.

B, the cover, which incloses the works.

C, the leaf of the worker, fastened tothe blind and slipped onto the `pintle, 4which is square at the top.

D, the pintle.

E, slotted piece.

F, middleV connection-piece, one `end of it connected 'to the pintle by :L rivet, and `the other end to slotted piece G, crank, with a square hole in its shank, into which ts the shaft H.

I, crank-pin', which tits in slot K npiece E.

L, projections on pintle D, which rests on piece E, and prevents the pintley from being turnedtoo far back. l i

The operation of this worker is to turn the shaft -H, :uid-the cmn'kpin I `will move piece E, andthe blind will be kopenedjor closed, as desired.

C'Zm'm;

I claim as my inventionf- I Revolving pintle D, pieces Eend F,`in combinatie with crank G, anfl crankpin I, substantially as described. v

HERMANN WOLFF. v Witnesses-z J. B. SMITH, WM. M, Hormon. 

